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  • 科目:英语
  • 题型:单选题
  • 难度:较易
  • 人气:1367

By the end of 2007, about half a million people had flooded into the city, ____ up around 10 percent of its total population.         

A.make B.made C.making D.to be made
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Bytheendof2007,abouthalfamilli